CVE-2026-116367

DeepSeek Harness sandbox.ts createContext

State: Published
Severity: 5.3 Medium
Published: Oct 26, 2026
Updated: Oct 26, 2026
Reserved: Oct 26, 2026

Description

A vulnerability was found in DeepSeek Harness up to 0.1.0-rc.5. This vulnerability affects the function createContext of the file packages/extensions/cordis-host-runner/src/sandbox.ts. The manipulation results in sandbox issue. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X	VulDB
3.1	6.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:X/RL:X/RC:C	VulDB
3.0	6.3 Medium	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:X/RL:X/RC:C	VulDB
2.0	7.5 High	AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:ND/RC:C	VulDB

Weaknesses

CWE-265 Sandbox Issue
CWE-264 Improper Access Controls

Affected Products

Product	Versions
HarnessDeepSeek	0.1.0-rc.0Affected 0.1.0-rc.1Affected 0.1.0-rc.2Affected 0.1.0-rc.3Affected 0.1.0-rc.4Affected 0.1.0-rc.5Affected

References

VDB-426331 | DeepSeek Harness sandbox.ts createContextvdb-entrytechnical-description
VDB-426331 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
CVE-2026-116367 | CVE Analysis and Reportthird-party-advisory
Submit #1012736 | DeepSeek deepseek-harness（@deepseek-ai/dsh，DeepSeek Harness） 0.2.0-rc.2 Remote Code Executionthird-party-advisory

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